CN213210262U - Single-phase cost control intelligent electric energy meter of integral type hard connection - Google Patents
Single-phase cost control intelligent electric energy meter of integral type hard connection Download PDFInfo
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- CN213210262U CN213210262U CN202021837529.6U CN202021837529U CN213210262U CN 213210262 U CN213210262 U CN 213210262U CN 202021837529 U CN202021837529 U CN 202021837529U CN 213210262 U CN213210262 U CN 213210262U
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Abstract
The utility model discloses an intelligent electric energy meter is controlled to single-phase expense of integral type hard joint, including PCB board, manganin shunt, current transformer and load switch, the signal output part of manganin shunt, current transformer and load switch all is equipped with the welding pin, be equipped with the corresponding pad hole with manganin shunt, current transformer, load switch's signal output part on the PCB board, the welding pin of manganin shunt, current transformer and load switch respectively with the PCB board on the pad hole through red copper pin welded mode welding formula structure as an organic whole. The signal end of the utility model adopts a hard connection mode, thus avoiding the long and various signal wires; meanwhile, the wiring length of the sampling signal is effectively shortened, and the current signal acquired by the manganin shunt is very small, so that the signal mutual interference influence among signal lines is effectively reduced, the signal interference caused by interweaving a plurality of flexible wires is avoided, and the performance of the product and the metering stability are improved.
Description
Technical Field
The utility model relates to an intelligent electric meter technical field especially relates to a single-phase cost control intelligent electric energy meter of integral type rigid coupling.
Background
The binding post of current single-phase cost accuse intelligent ammeter and PCB board between the two all are the connected mode that adopts wire flexible coupling, or the connected mode that flexible coupling and hard coupling combined together, if: the manganin shunt, the current transformer, the load switch and other signal sampling are connected with the PCB in a welding way by flexible wires; the electric energy test pulse signal, the multifunctional signal, the RS485 communication signal and the load switching-off and switching-on signal are output to be connected with the wiring terminal through a flexible wire or in a screw fastening and hard connection mode.
The defects of the prior art are as follows:
the connection mode of wire flexible connection is adopted between binding post and the PCB board of current single-phase cost accuse intelligent ammeter, or the technical scheme of the connection mode that flexible connection and hard coupling combined together all has following defect:
1. the signal wires are numerous, the influence on the appearance is attractive, and because the current signals acquired by the manganin shunt are very tiny and are generally microvolt-level, the wiring length of the sampling signals is long, the key is that the signals among the signal wires are mutually interfered and influenced, and the signals are particularly easily interfered and influenced by internal and external electromagnetic fields, so that the current sampling signals are unstable, and the metering accuracy is influenced;
2. the interference influence of an external alternating magnetic field of 0.5mT on a metering circuit loop cannot be completely eliminated by a connection mode combining soft connection and hard connection;
3. the signal wires are long and numerous, production and assembly are affected, and meanwhile, the wires are easily pressed by a circuit board and a watch case support, a current column of a wiring terminal and a current column of a manganin shunt or a current column of a current transformer to be broken, so that short circuit and meter burning between the current columns of the signal wires are caused, or the alternating current withstand voltage resistance is reduced, and even safety risks are caused;
4. the connection mode of the flexible connection cannot meet the requirement of automatic assembly production, so that the improvement of the production speed or the production efficiency is influenced;
5. although the auxiliary terminal and the PCB are in hard connection by screw fastening, which can meet the requirement of automatic assembly production, poor contact can also occur.
In view of the above technical problems, it is desirable to improve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art's defect, provide a single-phase expense accuse intelligent ammeter of integral type rigid connection.
In order to realize the above purpose, the utility model adopts the following technical scheme:
the utility model provides an intelligent ammeter is controlled to single-phase expense of integral type hard joint, includes PCB board, manganin shunt, current transformer and load switch, the signal output part of manganin shunt, current transformer and load switch all is equipped with the welding pin, be equipped with the corresponding pad hole with manganin shunt, current transformer, load switch's signal output part on the PCB board, the welding pin of manganin shunt, current transformer and load switch respectively with the pad hole on the PCB board through red copper pin welded mode welding formula structure as an organic whole.
Furthermore, the PCB further comprises a wiring terminal, and the wiring terminal is connected with the PCB in a red copper pin welding mode.
The power testing device further comprises an electric energy testing pulse signal module, a multifunctional signal module and a load switching-on/switching-off signal module, wherein the output ends of the electric energy testing pulse signal module, the multifunctional signal module and the load switching-on/switching-off signal module are respectively connected with the wiring terminal in a red copper pin welding mode.
Furthermore, the device also comprises a voltage sampling module, wherein the voltage sampling module is connected with the PCB in a mode of welding red copper pins.
Furthermore, the positive pole of the voltage sampling module is connected with the negative pole of the voltage sampling signal of the metering chip of the PCB, and the negative pole of the voltage sampling module is connected with the positive pole of the voltage sampling signal of the metering chip of the PCB.
Furthermore, the connecting terminal is also provided with a baffle plate, and the baffle plate is used for isolating strong and weak current of the connecting terminal.
Furthermore, the short-circuit device also comprises a short-circuit contact pin, wherein the short-circuit contact pin is in an annular shape, and a pin of the short-circuit contact pin is connected with the PCB in a contact pin welding mode.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the signal end adopts the mode of hard connection, has avoided signal wire long and numerous, has improved pleasing to the eye degree. Meanwhile, the wiring length of the sampling signal is effectively shortened, and because the current signal acquired by the manganin shunt is very tiny and is generally microvolt, the mutual interference influence of signals among signal lines is effectively reduced, the interference among the signals caused by interweaving a plurality of flexible wires is also avoided, and the performance of the product and the stability of metering are improved;
2. the interference influence of the external alternating magnetic field of 0.5mT on a metering circuit loop is effectively eliminated, the stability of a current sampling signal is improved, the resistance is enhanced, and the metering accuracy is improved;
3. the signal terminal adopts a hard connection mode, so that the requirement of automatic assembly production is met, the production assembly speed is increased, and the production efficiency is effectively improved; the consistency of the product is good, and the quality of the product is improved;
4. the signal end adopts a hard connection mode, so that a plurality of wires are removed, the occurrence of short circuit meter burning between signal wire current columns caused by the fact that the wires are easily pressed by a circuit board and a watchcase support, a current column of a wiring terminal and a current column of a manganin shunt or a current column of a current transformer are broken and the like is effectively avoided, the alternating current withstand voltage resistance is improved, the safety risk of short circuit meter burning is reduced, the safety, the stability and the reliability of a product are improved, and the quality of the product is improved.
5. The wiring terminal and the PCB are in hard connection in a welding mode, the requirement of automatic welding assembly production is met, and poor contact is avoided.
Drawings
FIG. 1 is an assembly diagram of a single-phase cost-controlled intelligent electric energy meter with a combination of hard-wired connections according to a preferred embodiment;
FIG. 2 is a single-phase cost-controlled intelligent power representation of a preferred embodiment in combination with a hard-wired connection;
FIG. 3 is a single phase cost controlled intelligent power representation of a preferred embodiment in combination with a hard-wired connection;
FIG. 4 is a diagram of a single-phase cost-controlled intelligent electric energy meter combined with a hard-wired connection according to a preferred embodiment;
FIG. 5 is a schematic diagram of the assembly of the single-phase cost-controlled intelligent electric energy meter of the preferred embodiment in combination with hard connection;
FIG. 6 is a schematic diagram of the assembly of the single-phase cost-controlled intelligent electric energy meter of the preferred embodiment in combination with hard connection;
FIG. 7 is a schematic diagram of the structure of the manganin shunt and the PCB and the application of the output wiring method in accordance with a preferred embodiment;
FIG. 8 is a schematic diagram of the structure of the MnCu shunt and the PCB and the application of the output wiring method according to the preferred embodiment.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
As shown in fig. 1 to 6, the integrated hard-wired single-phase cost-control intelligent electric energy meter provided by this embodiment includes a PCB 14, a manganin shunt 11, a current transformer 12 and a load switch 13, signal output ends of the manganin shunt 11, the current transformer 12 and the load switch 13 are all provided with a welding pin, the PCB 14 is provided with a pad hole corresponding to the signal output ends of the manganin shunt 11, the current transformer 12 and the load switch 13, and the welding pins of the manganin shunt 11, the current transformer 12 and the load switch 13 are respectively welded to the pad hole on the PCB 14 in a red copper pin welding manner to form an integrated structure.
The manganin shunt 11 comprises a manganin shunt current sampling line 1, and two leading-out pins of the manganin shunt current sampling line 1 are respectively welded in a bonding pad of the PCB.
The current transformer 12 includes a current sampling line 2 of the current transformer, wherein the current sampling line 2 of the current transformer is soldered in a pad of the PCB board.
The connection mode between the signal sampling and the like of key components such as the manganin shunt, the current transformer, the load switch and the like and the PCB is realized by welding the original flexible conductor, and the hard connection mode is completely adopted at present. The signal output wires of the manganin shunt, the current transformer and the load switch are respectively processed and improved into hard red copper pin welding pin type or directly removed, so that the signal wires are prevented from being long and numerous, and the attractiveness is improved.
Still include binding post 15 among the single-phase cost control intelligent ammeter, binding post 15 is connected through the welded mode with the PCB board.
The connecting terminal 15 is further provided with a baffle 16, and the baffle 16 is used for isolating strong and weak current of the connecting terminal.
The wiring terminal and the PCB board of the embodiment are in hard connection in a welding mode, the requirement of automatic welding assembly production is met, and poor contact is avoided.
The single-phase cost control intelligent electric energy meter further comprises a short circuit pin 17, the short circuit pin 17 is welded in a pad of the PCB in a rectangular annular mode, the annular surface of the short circuit pin 17 is perpendicular to the wiring terminal 15 at the moment, and the annular surface of the short circuit pin 17 is parallel to the surface of the manganin shunt 12.
In the present embodiment, as shown in fig. 7-8, the manganin shunt comprises a manganin shunt piece 04 and a copper bracket 05, wherein the manganin shunt piece 04 is arranged on the red copper bracket 05; the short-circuit pin 17 comprises a first short-circuit double-pin 01 and a second short-circuit double-pin 02 which are rectangular structures and are vertically welded with the PCB 14; a first sampling leading-out pin IA and a second sampling leading-out pin IB of the manganin splitter plate are vertically welded in M-and M + welding pads of the PCB 14 without leads respectively; the first short-circuit two-pin contact pin 01 is connected with a second sampling leading-out pin IB of the manganin splitter, the second short-circuit two-pin contact pin 02 is not connected with a second sampling leading-out pin IA of the manganin splitter, a current sampling signal is input to the input end of a current sampling loop through the leading-out pin IA, and the input end is connected with the 5 th pin of the metering chip; the second short circuit double-pin contact pin 02 bypasses the M-and M + bonding pads corresponding to the sampling leading-out pins IA and IB of the manganin splitter in an annular mode on the routing of the PCB 14, the output end of a current sampling loop is connected to the right upper side of the M + bonding pad through a through hole, the output end is connected to the 6 th pin of the metering chip, so that an annular circuit formed by the short circuit double- pin contact pins 01 and 02 is formed, in addition, the manganin splitter and the leading-out pins IA and IB also form an annular circuit, the two annular circuits are mutually connected in series to form a loop according to the positive and negative directions of induced currents generated by the two annular circuits, the induced currents generated by the two annular circuits are approximately equal in magnitude and opposite in direction, and the induced currents generated by the two annular circuits are mutually offset.
The single-phase cost control intelligent electric energy meter further comprises an electric energy test pulse signal module 7, a multifunctional signal module 8 and a load switching-on/switching-off signal module 6, and the output ends of the electric energy test pulse signal module 7, the multifunctional signal module 8 and the load switching-on/switching-off signal module 6 are respectively in hard connection with the wiring terminal 15 in a red copper pin welding mode.
Still include RS485 communication signal module 9 among the single-phase expense accuse intelligent ammeter, RS485 communication signal module 9 is connected through flexible line or screw with binding post 15.
The RS485 communication signal and the wiring terminal are connected through a flexible wire or in a screw fastening hard connection mode, and the reason is that all the electric meters cannot be connected through hard links, and the electric meters are connected in a flexible connection mode in some signal output modules.
The single-phase cost control intelligent electric energy meter also comprises a voltage sampling module, and the voltage sampling module is connected with the PCB in a welding mode; wherein, the anode 3 of the voltage sampling module is connected with the cathode of the voltage sampling signal of the metering chip of the PCB, and the cathode 4 of the voltage sampling module is connected with the anode of the voltage sampling signal of the metering chip of the PCB.
The single-phase cost control intelligent electric energy meter further comprises a voltage detection signal module 5, and the output end of the voltage detection signal module 5 is connected with the wiring terminal 15 through red copper pin welding. The voltage detection signal module 5 is used for detecting the opening or closing of the load switch 13.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the signal end adopts the mode of hard connection, has avoided signal wire long and numerous, has improved pleasing to the eye degree. Meanwhile, the wiring length of the sampling signal is effectively shortened, and because the current signal acquired by the manganin shunt is very tiny and is generally microvolt, the mutual interference influence of signals among signal lines is effectively reduced, the interference among the signals caused by interweaving a plurality of flexible wires is also avoided, and the performance of the product and the stability of metering are improved;
2. the interference influence of the external alternating magnetic field of 0.5mT on a metering circuit loop is effectively eliminated, the stability of a current sampling signal is improved, the resistance is enhanced, and the metering accuracy is improved;
3. the signal terminal adopts a hard connection mode, so that the requirement of automatic assembly production is met, the production assembly speed is increased, and the production efficiency is effectively improved; the consistency of the product is good, and the quality of the product is improved;
4. the signal end adopts a hard connection mode, so that a plurality of wires are removed, the occurrence of short circuit meter burning between signal wire current columns caused by the fact that the wires are easily pressed by a circuit board and a watchcase support, a current column of a wiring terminal and a current column of a manganin shunt or a current column of a current transformer are broken and the like is effectively avoided, the alternating current withstand voltage resistance is improved, the safety risk of short circuit meter burning is reduced, the safety, the stability and the reliability of a product are improved, and the quality of the product is improved.
5. The wiring terminal and the PCB are in hard connection in a welding mode, the requirement of automatic welding assembly production is met, and poor contact is avoided.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. The utility model provides an intelligent ammeter is controlled to single-phase expense of integral type hard joint, a serial communication port, including PCB board, manganin shunt, current transformer and load switch, the signal output part of manganin shunt, current transformer and load switch all is equipped with the welding needle, be equipped with the corresponding pad hole with manganin shunt, current transformer, load switch's signal output part on the PCB board, the welding needle of manganin shunt, current transformer and load switch respectively with the PCB board on the pad hole through red copper pin welded mode welding formula structure as an organic whole.
2. The integrated hard-wired single-phase cost-control intelligent electric energy meter according to claim 1, further comprising a connection terminal, wherein the connection terminal is connected with the PCB board by means of red copper pin welding.
3. The integrated hard-wired single-phase cost-control intelligent electric energy meter according to claim 2, further comprising an electric energy test pulse signal module, a multifunctional signal module and a load switching signal module, wherein output ends of the electric energy test pulse signal module, the multifunctional signal module and the load switching signal module are respectively connected with the connection terminal through red copper pins in a welding manner.
4. The integrated hard-wired single-phase cost-control intelligent electric energy meter according to claim 1, further comprising a voltage sampling module, wherein the voltage sampling module is connected with the PCB board by means of red copper pin welding.
5. The integrated hard-wired single-phase cost-control intelligent electric energy meter according to claim 4, wherein the positive electrode of the voltage sampling module is connected with the negative electrode of the voltage sampling signal of the metering chip of the PCB, and the negative electrode of the voltage sampling module is connected with the positive electrode of the voltage sampling signal of the metering chip of the PCB.
6. The integrated hard-wired single-phase cost-control intelligent electric energy meter according to claim 2, wherein the connection terminal is further provided with a blocking piece for isolating strong and weak current of the connection terminal.
7. The integrated hard-wired single-phase cost-control intelligent electric energy meter according to claim 2, further comprising a short-circuit pin, wherein the short-circuit pin is in a ring shape, and a pin of the short-circuit pin is connected with the PCB by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021837529.6U CN213210262U (en) | 2020-08-28 | 2020-08-28 | Single-phase cost control intelligent electric energy meter of integral type hard connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021837529.6U CN213210262U (en) | 2020-08-28 | 2020-08-28 | Single-phase cost control intelligent electric energy meter of integral type hard connection |
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| Publication Number | Publication Date |
|---|---|
| CN213210262U true CN213210262U (en) | 2021-05-14 |
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| CN202021837529.6U Active CN213210262U (en) | 2020-08-28 | 2020-08-28 | Single-phase cost control intelligent electric energy meter of integral type hard connection |
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Address after: No. 1818, Xingping 1st Road, Pinghu Economic Development Zone, Jiaxing City, Zhejiang Province, 314200 Patentee after: Zhejiang Hengye Electronics Co.,Ltd. Address before: No. 1818, Xingping 1st Road, Pinghu Economic Development Zone, Jiaxing City, Zhejiang Province, 314200 Patentee before: ZHEJIANG HENGYE ELECTRONIC Co.,Ltd. |